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Chat => Tech Chat => Topic started by: tickmike on July 15, 2016, 01:35:37 PM

Title: AC Balance On A Twisted Pair.
Post by: tickmike on July 15, 2016, 01:35:37 PM

AC Balance On A Twisted Pair.
Edit..Just to make it clear this is on a BT cable.
Can some explain about the effect noise rejection on a twisted pair if;
1 .. If the cable was damaged but not cut in two.?
2.. If the cable was stretched ?.
3.. If it was squashed flat.

Title: Re: AC Balance On A Twisted Pair.
Post by: JGO on July 15, 2016, 03:55:14 PM

Quick answer is WORSE.

How much worse depends on so many things so the only advice is don't damage it. I heard of a case where someone was making measurements of interference rejection and a half twist extra made 30dB difference. -

Title: Re: AC Balance On A Twisted Pair.
Post by: tickmike on July 16, 2016, 12:08:04 AM

Just to make it clear this is on a BT cable.